Phosphatidylserine

What is the best for form of Phosphatidylserine i searching around and found this:

Phosphatidylserine supplements were derived from the brain cells of cows. Because of concerns about mad cow disease, however, most manufacturers now produce phosphatidylserine supplements from soy or cabbage derivatives. Early studies, though promising, were based on cow-derived supplements. It's not known if plant-based phosphatidylserine supplements offer any benefits.

EndoAmp had a high-quality 50% PS extract. The new EndoAmp Max includes 600mg of alpha-GPC, which was added for $5 extra, and costs $20 on it's own at NP. Most studies done these days and for the past several years are with Soy based PS, so it has been shown to be effective.

You're really getting quite a bit of product for the price with EndoAmp Max; especially in terms of the A-GPC content (600mg/serving.) Combine that with the PS content (800mg/serving), and it's a hell of a combo product for the price.

Check out this thread also if you haven't already. I posted some studies in there on both PS and A-GPC supplementation and resistance exercise: